Titanium surface preparation batio 3 /tio 2 Methods of Piezoelectric Antimicrobial Coatings

An antibacterial coating and piezoelectric technology, applied in the field of metal surface coating, can solve the problems of easy corrosion, endangering the ecological environment, non-wear resistance, etc., and achieve the effects of high production efficiency, simple preparation process and low cost
CN112981495BActive Publication Date: 2022-07-15SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2022-07-15

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Abstract

The invention provides a method for preparing BaTiO on titanium surface 3 / TiO 2 The method for piezoelectric antibacterial coating includes: A. Pretreatment of a titanium substrate; B. Immersion of the pretreated titanium substrate into an electrolyte, and performing micro-arc oxidation treatment to obtain BaTiO 3 / TiO 2 Piezoelectric antibacterial coating; in step B, the electrolyte includes the following components: 0.007-0.028mol / L sodium silicate nonahydrate, 0.008-0.033mol / L sodium hexametaphosphate, 0.002-0.035 mol / L barium titanate powder. In the present invention, BaTiO is prepared in situ on the surface of the titanium substrate by using the micro-arc oxidation technology. 3 Doped TiO 2 Modified titanium coating to obtain BaTiO with piezoelectric response 3 / TiO 2 The composite ceramic coating has both antibacterial properties and corrosion resistance and wear resistance, and can be used as an antibacterial protective layer on the surface of facilities that have long-term service underwater.
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Description

technical field

[0001] The invention relates to the technical field of metal surface coatings, in particular to a preparation of BaTiO on titanium surface 3 / TiO 2 Methods for Piezoelectric Antimicrobial Coatings. Background technique

[0002] Titanium and its alloys have been widely used in the aviation industry, marine ships, medical and surgical instruments and other materials due to their low density, non-magnetic properties, high specific strength, good biocompatibility, non-toxicity, corrosion resistance and other excellent properties. Especially when used as a marine service facility, the chloride ion (Cl - ) corrosion has better resistance. Although titanium metal is widely used in various fields due to its excellent comprehensive properties, there are still some problems in practical applications with the expansion of its application range. First of all, titanium-based metal has poor wear resistance, which affects the safety and durability of its use process. S...

Claims

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